INTRODUCTORY ESSAY. 221
15,000 feet is of course far from complete; those with an as-
terisk (*) have been observed above 17,000 feet.
Corydalis Tibetica. *Aster atpinus.
*Draba aizoides and others. * Artemisia.
*Myricaria. *Nepeta multilracteata.
*Biebersteinia odora. Cynoglossum.
Oxytropis cTiiliopJiylla. Lithospermum euckromon.
* Astragali, several. *Gymnandra.
Potentilla Balessovii. Bheum.
„ anserina. Ephedra.
* „ Meyeri. *Carices.
*Sibbaldia procumbens, var. *Stipa.
Ghamaerhodos sabulosa. *Lloydia serotina.
*Sasifraga cwnua. *Pestuca ovina, and other
*SaussTirese? three species.
Owing to the aridity of the climate all Crypt Offamice are
extremely rare: only three or four Ferns ocuur; Mosses are
scarcely more common, and never fruit.^ A few crustaceous
Lichens, on stones, and half-a-dozen Fungi, including several
British species, have been collected.
Western Tibet is tolerably well known botanically*'. It
was first explored by Dr, Falconer, who visited Hasora, Dras,
and Balti, and made a fine Herbarium, which is unfortunately
still unexamined and undistributed, at the India House.
Jacquemont visited Piti in 1830, and Dr. Royle's collec-
tors were there also. Dr. Thomson's collections were made
in Piti, Balti, Eupchu, Ladak, Zanskar, Nubra, and Dras.
Captain Henry Strachey made an excellent collection in the
* There are a few plants in the Wallichian Herbarium, collected by Moor-
croft, the first explorer in modern times of Ladat, and ticketed as from that
place, but they are mostly outer Himalayan plants.